Each of these 70,000-ton vessels was designed to feature three 18.1-inch turrets, and represented the firm determination of the IJN to outrange all other navies. The former consisted of four types: ranging from 2 metre to 4.5 metres in length, while the latter category consisted of several types ranging between 1.5 and 15 metres long.45The largest of the high-angle directors were produced especially for the Yamato class of superbattleships, plans for which were drawn up after the failure of the second London Naval Limitation Conference in 1936. The basic rangefinder designs produced by Nippon Kogaku were grouped into two categories - low-angle and high-angle directors. NIKON AND THE SPONSORSHIP OF JAPAN'S OPTICAL INDUSTRY If it did, the Yamato's optics were the finest in the world, significantly better than the Iowa's. Here are two sites that argue, right or wrong, that the US was not relying upon radar to range the Japanese ship at the beginning of the engagement:īut let's examine what happens though if the Iowa loses its radar in an engagement with the Yamato (Which it almost certainly would). Firing by radar at 35,000 yards was not the first choice. Thus you have posted that the US did not resort to using radar directed fire until after it became too dark to use visual sighting. Second, notice the US radar, while it could spot shell splashes was not being used to range the target. In an exchange with the Yamato, it would be one of the first things knocked out. US radar was very sensitive to damage (Most were - the Bismark also knocked out its own radar with its own main guns.). First, notice the American ship's guns own recoil knocked out its own secondary gun surface radar. Comander Dale of the Bunker Hill was in an aircraft over the Nowaki to spot the fall of shot. Lieutenant Commander Abhau of the gunnery department was impressed by the latter, because the signal on the radar scope was so precise that fire controlmen could see the splashes of the 16 inch projectiles falling near the target. The latter knocked the SG surface search radar out of commission but didn't affect the Mark 8 main battery fire control radar. Turret two opened with a salvo of three projectiles, followed shortly by a salvo from turret one.
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